Subscription fatigue is real, and I'm currently going through it, but it's not the existence of subscription-only model which nudges me to cancel a membership.

If I pay for something, I want the tool to work for me. I can't use an application if it tries to steal my attention all the time. An upgrade pop-up there, a reminder notification there, and the application wears me down.

I like quiet applications. It's there. I'll use it. An unobtrusive promo button for a new feature is OK, but constant nudging for the same thing is tiring. Dropbox used to do that with document signatures, they stopped now AFAICS.

If I pay for your application, please be patient and respectful, because the moment I feel that your application is more about getting my money than providing me services, I'm out.

The value I get is in the service you provide via your application. Not the existence of said application, so stop treating your users as cows in line waiting to be milked.

This is another reason I'm self hosting as much as possible. I'm willing to put in the work to maintain an application rather than seeing constant banners and pop-ups wedged in to milk me more.